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Security report for thermona.lt

Thermona, spol. s r.o. · Energy · Lithuania

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 3 other checks.

Security score

57/100

Risk levelMedium

0–100, higher is better. How it is calculated

Thermona, spol. s r.o. is a well-established manufacturer specializing in gas and electric boilers, with a strong presence in the heating technology sector since 1990. The company emphasizes quality, reliability, and customer satisfaction, offering a range of products including condensing boilers, atmospheric boilers, and electric boilers, along with control systems and hot water tanks. Their market position is reinforced by a consistent Czech brand identity and a network of regional partner sites across Europe and Asia. Technically, the website is built on a modern ASP.NET WebForms platform using popular JavaScript libraries and frameworks, providing a responsive and user-friendly experience. Security posture is solid with HTTPS and CAPTCHA protections, though improvements in security headers and incident response disclosures are recommended. Privacy compliance is well addressed with a comprehensive privacy policy and cookie consent mechanisms. Overall, the website reflects a professional and trustworthy business with moderate technical sophistication and good compliance practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

6 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No DMARC record found

      DMARC provides email authentication and reporting

      What to do: Add DMARC record: "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com"

  4. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching thermona.lt

This scan found 21 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
62
Security headers
45
Email security
65
DNS health
70
Network security
20
GDPR outside view
80
Average
57

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company operates primarily in the energy sector, focusing on manufacturing and supplying heating equipment. Their business model centers on product manufacturing and distribution through a network of regional partners, targeting both residential and commercial customers. The presence of multiple country-specific domains indicates a broad geographic reach and localization strategy. The company maintains a strong brand with consistent messaging and quality assurance. Revenue streams likely derive from product sales, installation services, and after-sales support. Growth indicators include continuous product development and participation in industry fairs. The partnership ecosystem is robust, with multiple localized websites and social media channels supporting marketing and customer engagement.

Security posture

Thermona's website demonstrates a mature security posture with HTTPS encryption and CAPTCHA protections on forms to mitigate spam and abuse. However, the absence of explicit security headers such as Content-Security-Policy and X-Frame-Options suggests room for enhancement to protect against common web vulnerabilities. No incident response or vulnerability disclosure information is publicly available, which could be improved to foster transparency and trust. Privacy compliance is strong, with GDPR-aligned cookie consent and privacy policies. No critical vulnerabilities or exposed sensitive data were detected in the provided content. Overall, the security maturity is good but could benefit from additional hardening and transparency measures.

Recommendations

  1. Implement standard security headers (CSP, X-Frame-Options, X-Content-Type-Options) to enhance protection against web attacks.
  2. Publish a security.txt file and provide clear incident response contact information to improve vulnerability disclosure and response readiness.
  3. Regularly audit and update third-party libraries to mitigate risks from outdated components.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Consider adding a dedicated terms of service page to clarify user and business obligations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Thermona, spol. s r.o.
Description
Thermona, spol. s r.o. is a leading manufacturer of gas wall-hung boilers, gas condensing boilers, and electric boilers. Operating since 1990, it is a modern and dynamically developing company focused on heating technology. Their products comply with all necessary standards and undergo strict quality control. The company emphasizes customer satisfaction and continuous product and service improvement.
Key services
Manufacture of gas condensing boilers, Manufacture of atmospheric gas boilers, Manufacture of electric boilers, Supply of control systems, hot water tanks, and heaters, Service and installation support
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Bootstrap 3.3.5, Google Fonts, Font Awesome 4.4.0, jQuery UI, Moment.js, SliderPro, SelectBoxIt, Google Maps API, FancyBox, PrettyPhoto, Sly.js, Perfect Scrollbar
Frameworks
ASP.NET WebForms
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • Use of CAPTCHA on forms
  • Cookie consent banner with GDPR compliance

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and multiple language options
  2. Strong focus on heating technology manufacturing and services
  3. Multiple contact forms with CAPTCHA for spam prevention
  4. Cookie consent banner present with multi-language support
  5. Social media presence on Facebook and YouTube
  6. No WHOIS data available for .lt domain, limiting domain trust verification
  7. No explicit security.txt or incident response contacts found
  8. No visible security headers detected in provided data
  9. Use of modern JavaScript libraries and frameworks
  10. Good SEO and metadata presence
Technical notes

Notes

The website uses a mature ASP.NET WebForms CMS platform combined with modern JavaScript libraries such as jQuery, Bootstrap, and Google Maps API. The design is responsive and mobile-friendly, with good SEO metadata and structured navigation. Performance is moderate, with potential optimization opportunities in script loading and asset management. The use of CAPTCHA on forms indicates attention to spam prevention. However, the lack of visible security headers and incomplete WHOIS data suggest some technical and operational gaps. The site integrates multiple external resources and social media platforms, supporting marketing and analytics efforts. Overall, the technical infrastructure is solid but could be modernized further for improved security and performance.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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